Disassemble the lower bearing, select and measure it. If there is scratch
or discoloration on the roller surface, replace it. When replacing the bearing,
the English letters and types of the bearing shall be reserved. Most of the
plunger pump bearings are of large load capacity. The original manufacturer and
Standard commodities shall be bought. If another brand is replaced, the
personnel with experience in bearing shall be consulted to check the table for
replacement, so as to adhere to the bearing and load capacity.
Application
and repair methods of hydraulic pump plug pump: This paper mainly introduces the
application and repair methods of hydraulic pump plug pump. 1 oil supply method
of hydraulic pump
The direct axis swashplate plunger pump is divided into two
types: pressure oil supply type and self-priming type. The pressure oil supply
type hydraulic pump mostly selects the oil tank with air pressure, and the
hydraulic pump itself is equipped with a make-up pump to supply pressure oil to
the oil inlet of the hydraulic pump. The self-priming hydraulic pump has a
strong talent of self-priming, and there is no external oil supply. The
hydraulic oil tank supplied by air pressure can operate the machine only when
the hydraulic oil tank reaches the application air pressure after starting the
machine every time. If the air pressure of the hydraulic oil tank is short, it
will act as a machine, which will pull off the hydraulic pump and the sliding
whip, and will cause abnormal wear of the return plate and the pressing plate in
the pump. Select the plunger pump supplied by the make-up oil pump. After use,
the operator needs to check the plunger pump 1-2 times a day to see whether the
working dynamic of the hydraulic pump is normal. If it is found that the speed
of the hydraulic cylinder drops or the vehicle is blocked, it is necessary to
check whether the empty position of the internal gear pump is too large.
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